Please Help - clarification for using the SAML toolkit with existing Java Web Apps

[coffeebeantraining]

I cannot find any information on how to implement the SAML Toolkit for existing Java Web Apps with the following constraints:

1. Given a Java Web App (non Spring) packaged as a war file and no have access to the Java source code.
2. The war file is deployed to Tomcat 9 running on an Azure VM under the webapps folder.
3. OpenJDK 21 for the Java Version
4. Azure Entra ID Enterpise Apps is used for IDP with SAML enabled
5. Can I use the SAML Toolkit as a service provider within Tomcat and have Tomcat act as the Service Provider / Relying Party?
   https://github.com/SAML-Toolkits/java-saml/releases/tag/v2.9.0